Added an early implementation of Live-Variables analysis built on
source-level CFGs.  This code may change significantly in the near
future as we explore different means to implement dataflow analyses.

Added a driver option, -dump-live-variables, to view the output of
live variable analysis.  This output is very ALPHA; it will be improved shortly.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41737 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/ASTStreamers.h b/Driver/ASTStreamers.h
index dfd9d54..34ce864 100644
--- a/Driver/ASTStreamers.h
+++ b/Driver/ASTStreamers.h
@@ -26,6 +26,8 @@
 
 void DumpCFGs(Preprocessor &PP, unsigned MainFileID,
               bool Stats, bool use_graphviz = false);  
+              
+void AnalyzeLiveVariables(Preprocessor &PP, unsigned MainFileID);
 
 } // end clang namespace